Co-Innovation Center for Sustainable Forestry in Southern China , Nanjing Forestry University , Nanjing 210037 , China.
College of Light Industry and Food Engineering , Nanjing Forestry University , Nanjing 210037 , China.
J Agric Food Chem. 2018 Aug 1;66(30):7916-7922. doi: 10.1021/acs.jafc.8b02522. Epub 2018 Jul 18.
The antivitamin B, 4'- O-methylpyridoxine (MPN); its glucoside, 4'- O-methylpyridoxine-5'-glucoside (MPNG); and vitamin B compounds, including pyridoxal (PL), pyridoxamine, pyridoxine, pyridoxal-5'-phosphate (PLP), and pyridoxamine-5'-phosphate, exist in Ginkgo biloba seeds, which are widely used as food and medicine. This work aimed to determine the MPN analogues in G. biloba seeds at different growth stages in terms of cultivars and ages of trees. The highest total MPN contents of 249.30, 295.62, and 267.85 μg/g were obtained in the mature stages of three selected G. biloba samples. The total contents of vitamin B compounds decreased significantly in the entire growth period of the three samples. Principal-component analysis revealed that MPN and MPNG were important contributors in the MPN-analogue metabolism of G. biloba seeds. The influence of the cultivar on the content and composition of MPN analogues was greater than that of the age of the G. biloba tree.
抗维生素 B，4'-O-甲基吡哆醇（MPN）；其糖苷，4'-O-甲基吡哆醇-5'-葡萄糖苷（MPNG）；以及维生素 B 化合物，包括吡哆醛（PL）、吡哆胺、吡哆醇、吡哆醛-5'-磷酸（PLP）和吡哆胺-5'-磷酸，存在于银杏种子中，银杏种子被广泛用作食品和药物。本工作旨在从品种和树龄两方面确定不同生长阶段银杏种子中的 MPN 类似物。在三个选定的银杏样本的成熟阶段，总 MPN 含量最高，分别为 249.30、295.62 和 267.85μg/g。在三个样本的整个生长过程中，维生素 B 化合物的总含量显著下降。主成分分析表明，MPN 和 MPNG 是银杏种子 MPN 类似物代谢的重要贡献者。品种对 MPN 类似物含量和组成的影响大于银杏树龄的影响。
